hi people i have another strange one for you! I was goin up the a1 last nite and when i hit 1bar of boost in any gear it sort of misfires/fuel cuts but the boost will still climb to 1.5-1.8 bar depending on which gear im in but it wont let you use it if you no what i mean!i dunno if its juat ate a plug,coil pack is on its way or the worst case scenario the fuel pump is packing up!i have been assured that the fuel pump is pretty indestructable on it so any ideas?its a focus rs mk1 btw lol!cheers guys

 

is it chipped?
if not it'll be a timing retard/spark cut to stop you blowing your engine up lol!
have you altered the actuator or fitted a bleed valve recently?

 

it has a dreamscience map on it mate and the actuator hasnt been touched since it got set up!its recently had a timing belt done about a month ago and its been fine up until last nite!just pottering on it drives fine its only when u cross the 1bar area of boost!it hasnt got a bleed valve either mate i am totally stumped lol!cheers

 

i'd check for pipes coming off things, e.g. map sensor, although that should give a rough idle if faulty.
check plugs and coil pack for signs of wear then.

could just be the gap too big on the plugs and boost is 'blowing' the spark out.

 

ive checked the coil pack and leads and visually they look fine but u never know whats happening inside lol!my mate has it at his garage and is gonna change the plugs then work backwards from there to try and find out!cheers for your help bud!much appreciated!